Patent US2542354A successfully refreshed from Google Patents.
US2542354A
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US
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Seat cushion spring assembly
Assignee: Individual
•
Filing: 1949-04-11
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Granted: 1951-02-20
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Expires: 1969-04-11
Abstract
No abstract record available.
Inventors
- 👤 Platt Cornelius Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:54
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05; A47C23/0515; A47C7/00; A47C7/02; A47C7/34; A47C7/347; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789815A
Cited
US867507A
Cited
US1480753A
Cited
AT105985B
Cited
GB269812A
Cited
US1761711A
Cited
US1727529A
Cited
US1929792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |